<?php
/**
 * Created by PhpStorm.
 * User: zhangrongxiang
 * Date: 2018/2/1
 * Time: 下午10:27
 */

//*  * If set to true, it returns all of haystack from the beginning to the first occurrence of needle.
$strstr = mb_strstr( "hello china", "ll", true );
echo $strstr . PHP_EOL; //he

//* If set to false, it returns all of haystack from the first occurrence of needle to the end,
$strstr = mb_strstr( "hello china", "ll", false );
echo $strstr . PHP_EOL;//llo china

//hello china
echo mb_strstr( "hello china", "ll", true ) . mb_strstr( "hello china", "ll", false ) . PHP_EOL;


$strstr = mb_strstr( "hello China,hello PHP", "ll", true );
echo $strstr . PHP_EOL; //he

$strstr = mb_strstr( "hello China,hello PHP", "ll", false );
echo $strstr . PHP_EOL; //llo China,hello PHP

$strstr = mb_strstr( "PHP是世界上最好的语言😄", "最好", true );
echo $strstr.PHP_EOL;
$strstr = mb_strstr( "PHP是世界上最好的语言😄", "最好", false );
echo $strstr.PHP_EOL;
